Google's merged their Spreadsheets product with Writely into the beginnings of an online office suite called Google Docs.

Google Docs is a collaboration tool. You can create, upload, and share documents with anyone, plus, each created spreadsheet can be up to 10,000 rows - which gives you quite a lot of breathing room. Your work can be stored on Google's servers if you elect that option, and you can also choose to share your documents with the world, however, the default is private.

You'll need to have a Google account in order to take advantage of this new service, just like any other Google app (excepting search), and if you have been using Writely, all your docs are now moved over to the new Google Docs service. I took Google Docs for a quick spin late last night and it's pretty powerful, well worth spending some time getting to know all the features. — Wendy Boswell